lib bell



revolve.

lceivng inotion from the main driving-sbatte' shy a pair' ofgear-wheels, 1/ l'. -L L represent 2 usarse ing between thesaid cutters,so as to operate in conjunction with the likewise serrated cutpastededge of the paper slides, so that the line of paste on the under sidewill come be tween the rails, and be kept thereby from coming in contactwith the arm K as the paper is drawn alongas shown in Fig.` 13.

As shown in'Figs. 1, 2, and 3, the arm K is bent upward and extendsforward to the arm c', to which it is secured by a set-screw'pass ingthrough al slot in the end of the arm K', by which- 'the blade K issupported 'in position. k is a screw passing horizontallythrcugh the armK' at. the point where the arm passes over the roller F. The screw is ofa length equal to the'width ot' the recess g infwhich it tits, so as tobe held against lateral movement by the sides thereof'.V By turning thisscrew the4 arm K' .and knife attached can be' adjusted laterally to therequired position to causeth'e scrrations of the knife' to llt betweenthe serrations of the cutter-rollers as the cutters are broughtin'conjunction as' will be hereinafter described. Nuts mayb first abovedescribed. The lower and upper cutter-rollers G G' are, respectively,provided with a serrated cutting-edge, g1 g2, the teeth of whichcorrespond with the spaces in the edge of the stationary blade Ki? andare beveled off on one sidez, as shown in ig. 9. The serrated cutters ylq project beyond the surface of the rollers G G. The roller G is formedwith a .longitudinal groove or recess, g, on each side of the cuttersgl, while thevroller G is con structed with a. projecting rib, g4,between which and the cutter g2 is a groove, g5, similar to those in theroller, G, into which grooves the cutter lgl g2 and rib g project as therollers is a transverse counter-shaft rea'pairof elliptic gear-wheelsconnecting the counter-shaft l with the shaft of the upper revolvingcutter G, so y as to produce a variable rot-ary motion ofthe latter, fora purposepresently to be explained, This motion can be readily regulatedby changing the position of one ofthe elliptic ge. -whcels ou its shaft,one

of which is secured by means of a set-screw for this purpose. m" is aIcrank mounted on the outer end of the shaft of the upper cutter G,

e appliedto the screw on each side of the'ai'm K", if desired, to 'holdvthe arm in place it has lbeen adjusted and connected by a rod, m',with-a ver, n, turning on a stud projecting from the side frame A. Thelever a engages with a spring-pawl, n', attached to a plate, n3, whichis secured to the outer end of the rock-shaft e',

as clearly shown in Figs. 1 and 6. vEach rev elution of the crank mcauses the rocking-lever n to raise the striking-amis c until the pawlal is released, when a reacting spring, a?,

connectingwith theplaten. causes the armse to Y descend, whereby a sharpblow is given to the punch-rods d1, which are then returned to theirelevated position by the springs d". D is a longitudinal counter-shaftsupported in bearings attached to one of the side frames A. It

is connected with the transverse shaft l by a pair of bevel-wheels, o o,and transmits motion to the shaft P of the bottom pasting and fold ingmechanism by a similar pair of wheels, ol 7. -p p are two oscillatingarms mounted loosely on the shaft P, and carrying between their innerends the transverse foldingblade P', while their outer ends areconnected by a cross-bar, p. A spring, p3, connects the outer eiid ofone of the-arms p tothe traine of the paste-receptacle, and operates' toelevate the 'folding-blade after it has completed its downward orfolding movement. rfreprcsents acam secured to the shaft P, and engaging'with one end of a two-armed rocking lever, r3

lthe opposite end of which engages with a vstu or projection, r2, on thearms p, so that the latter are voscillated once for each revolution ofthe shaft P. s s are two radial arms secured to the shaft P. so as torevolve therewith, and' arranged between the oscillating arms p. Thepasting-bar S, pivoted between the arms s, is provided with an arm, ii,which rests against the shaftP when the pasting-bar is in a radialposition. A spring, t, connects this arm with the shaft, 'and serves toreturn the pasting-bar .to this radial position after it has been swungout of this position during the operations of rcceivin paste and ap)lying it to the end of the passing Ailanlr. The ar S is provided with ayielding ledge, .92, of rubber, leather, or other suitable material. fortaking the paste from the paste-roller an ci' applying it to the bottomlap of the bag. It is secured to the bar S between two plates, si s, byscrews, as shown iu Fig. l2. U is the paste-receptacle, and 1I. thepaste-roller arranged therein at the properv distance from the shaft P.A11-intermittent motion is imparted to the paste-roller u from the shaftl by means of spring-pawl 'v and ratchet-wheel r in a common manner. q'q represent two pressure-rollers arranged in close contact with *eachother, their line of contact being directly l under the-folding-bar p.They are driven from the shaft of the carrier-roller H by means of twopulleys', Q' Q' andan endless belt, q', as v clear y showin in igs. 2and 3.

The web o f paper is passed from the reel B over'the mide-roller b,where paste is applied to one edge, by a paste-'wheel in acommoninanner, whence it passes under the former@ or crenscrs C i), bywhich the two edges thereof the blade while the-upper sir 'are'partiallyfolded over, and thence through are so adjusted as to bring the cutterg'l of the lower roller in engagement with the blade K at the time thelength of a blank bag has passed this point, when the cutter g2 raisesslightly the blade (which the elasticity of the, arm Kpermits) untillthe beveled side of the teeth of the cutter g1 comes in contact withthe upper side of the blade at a point a little back of thecutter g2, soas to form a stop dur-, ing the time the latter is severing the underside of the paper tube, as shown in Fig. 7. As soon as the teeth of thecutter g2 become disengaged from the teeth of the blade K, the cutter g1will `have advanced so as to engage therewith, slightly depressing theblade K, when the stop gi will have come incontact with the under sidethereof so as to support Zle of the paper'is being severed. It will beobserved that the teethof the cutters g1g2 operate in conjunction withthe teeth of the blade K as shears insevv@ring the paper instead of,tearing it apart; and that the successive operation of the cutters y1 g2cut the` blank with one side a little longer than the other, for aWell-known purpose. While this operation is being performed the -punchesare struck by the arms e, and a semicirc'ular or V shaped notch therebyout in each side of the tube at the point at which the next bag is to besevered from the tube. This notch, at the point at which the web isfolded, insures a clear cut as the paper is severed, and a more perfectclosing of the bottom of the bag. The rollers -G G do not revolve incontact with each other, but are arranged so as to have sufiicient space(about Athree-cighths Yof an inch) between them for the free passage ofthe blank, these rollers acting merely as guides'to direct the papertube between rollers H H2, which carry it forward onto the endlesscarrier h h. The elliptical gear-Wheels ,L L1 are, preferably, soadjusted on their shaft as to impart to the cutters g g, at the time ofseveringthe paper, a motion alittle, faster than that of the advancingpaper tube, so as to take '-up any slack in the paper, and to carry theblank forward aiter it is out oi, out of the' Way of the end of the tubefrom which it was severed. The rollers H H2 should also revolve withsufficient velocity to impart to the blank a slightly acceleratedmotion, 'so as to prevent the serrated and contiguous ends of the blankandtubo from interfering with each other.'

The operation of severing the blank from the paper tube presses the lapsof the side joint together at this point, when thc carry ing-rollers HIl complete the iointas the blank passes between them. The roller il?and a similar one arranged over the roller Hl may also be connected byendless cords so as rollers the required distance, the brush s2 of e therevolving pasting-bar, which has, as the i latter revolved, been broughtin contact with the paste-roller, as shown in Fig. 2, transfers thepastethereon to the end of the blank, as represented in Fig. 10, whentheiolding-blade descends' and the bottom lap of the hap,` is formed andclosed by the pressure-rollers in an ordinary manner, as shown in Fig.1l. The pasting-bar, being pivoted between ,the arms s, turns on itspivots as the brush s2 cornes in contact alternately' with thepasteroller and end of the paper blank, so as to per mit it to pass thesame, as shown in Fig. l0, the spring t returning the bar and brush totheir former radial position after they have become disengagedtherefrom. The length of the brush c2 should be just equal to the widthof the bag, so as not to apply paste to the folding-roller at eitherside of the edge of the paper. The manner of securing the brush in placepermits the brush to be readily removed and others substitutedcorresponding in width withl bags of diiiverent sizes.`

Although two rails or ledges, kf, are shown attached to the arm K for4the pasted edge of the paper to ride upon, the one for supporting. theextreme edge of the paper is not absolutely' necessary.

What l claim as my invention isi-.-

i. The combination in a paper-bag machine lade or cutter, of the rollerswith a stationaryb G G provided with cutters g1 g?, substantially as andfor the purpose hereinbeiore set forth.

2. The combination, with the stationary thereto, so as to permit thepassage of theoverlapped and unfastened edges of the foldedpaper tube,substantiallylas hereinbefore set forth.

3.\The combination, with the rollers F F, the former provided with arecess g, of the stationary knife and arm K K' and ledge It',substantially as and for the purpose hereinbefore set forth.

4. The combination, with the knife and arm K K', and roller F providedwith recess g, of the adjustable screw k, arranged substantially as andfor the purpose hereinbeiore -set forth.

5. The combination with the guide-roller h and curved gages Gd, or theedge punches E and guide-brackets cl2, substantially as and ior thepurpose hereinbefore set forth.

6. The combination of the edge punches E, striking-arms c c, andvrock-shaft e substantially as and for the purpose hereinhefore setforth.

7. The combination, with the edge punches, rocking,r shaft c', andstriking-arms e e, of the plate as, retinal-spring a, pawl Geschirr-ting:mn 11, pitinan. m', and. crank-arm m, subst-air, tially as and for thepurpose llereinbebre set forth.

' 8. The combination, with the cutter-rollers G G', of the elli )ticalgear-wheels L L', for imparting a varia 51e-motion to thecutter-rollers, substantially as and for the purpose hereinbefore setforth.

`9. The combination, with the shaft P actuated by the eountershaft 0, ofthe revolving pasting-bar Sffoldingblede, androcking arms

